Starting pressures for autocrossing OE Pirellis?

[Open Loop]

Greetings - I haven't autocrossed my car yet, which is a '16 GT, very underprepped CAM-C car with not enough front neg. camber, progressive Steeda springs and no sway bar change. I have an event Sunday. It will get up to the mid-90s, dry, on asphalt. I am running a set of the stock summer Pirellis, although they are 275s square on 10 in. wide wheels. Anyone have a sense as to what pressures I should start at? Will these tires need to be sprayed? Thanks in advance.

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[lizardman]

I would start at 32F 30R and adjust from there. Use tire chalk, check tire temps, and feel of the car to adjust up or down. Recheck pressure right before you start your next run. On RE71s I run 32-29F 30-27R depending on conditions. IMHO 2 driver cars should probably be spraying. A single driver on a hot July day and a small run group and you might have to spray. If I'm over 120F by the time I get parked in grid I'm looking for a sprayer. Honestly, don't worry about spraying and just enjoy your day.

 

[shogun32]

If I'm over 120F by the time I get parked in grid I'm looking for a sprayer.

with what, Camaro repellent?

 

[Open Loop]

Ok - thanks. I just read these. I started at 35 all around and it felt better than I expected. I'll probably drop a few in the rear and see how it goes.

I am simply turning it to "Track" mode with the switch, but I feel a nanny kicking in around a very slow 180 hairpin. Is there a way to turn more off?

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